Deformation Behavior of Fiber-Reinforced Polymer Reinforced Engineered Cementitious Composite (ECC) Flexural Members under Reversed Cyclic Loading Conditions

2003 ◽  
Vol 100 (1) ◽  
Keyword(s):  
Cyclic Loading ◽  
Deformation Behavior ◽  
Fiber Reinforced Polymer ◽  
Loading Conditions ◽  
Cementitious Composite ◽  
Flexural Members ◽  
Reversed Cyclic Loading ◽  
Engineered Cementitious Composite ◽  
Reinforced Polymer ◽  
Reversed Cyclic

scholarly journals Behavior of Structural Concrete Frames with Hybrid Reinforcement under Cyclic Loading

2021 ◽  
Vol 15 (57) ◽  
pp. 70-81
Author(s):  
Asmaa Sobhy ◽  
Louay Aboul Nour ◽  
Hilal Hassan ◽  
Alaaeldin Elsisi
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Joint Model ◽  
Fiber Reinforced Polymer ◽  
Longitudinal Reinforcement ◽  
Fiber Reinforced ◽  
Joint Models ◽  
Reversed Cyclic Loading ◽  
Reinforced Polymer ◽  
Reversed Cyclic

A substantial amount of work was carried out on the use of fiber-reinforced polymer (FRP) in reinforcing concrete structural elements, which demonstrated considerable inelasticity or deformity through monotonous and fatigue loads. Even so, the action of FRP bars in FRP-RC columns and frame structures has not yet been studied during reversed cyclic loading. In this research, reversed cyclic loading was conducted on three beam-column joint models using the finite element method with ANSYS software. The first model was for a joint designed with steel rebar for both the longitudinal reinforcement and stirrups. Glass fiber reinforced polymer (GFRP) rebar was used to reinforced the second joint model for both longitudinal reinforcement and steel stirrups, and the third joint model was designed with hybrid steel/GFRP reinforcement for the longitudinal reinforcement and steel stirrups. The performance of the three models under reversed cyclic loading, such as load vs. story drift and energy dissipation capacity, were compared. The GFRP-reinforced model displayed a predominantly elastic activity up to failure. Although its energy dissipation was weak, its performance in terms of total storey drift demand was satisfactory.

Performance of FRP confined and unconfined engineered cementitious composite exposed to seawater

2019 ◽  
Vol 53 (28-30) ◽  
pp. 4285-4304 ◽  
Author(s):  
Alaa Mohammedameen ◽  
Abdulkadir Çevik ◽  
Radhwan Alzeebaree ◽  
Anıl Niş ◽  
Mehmet Eren Gülşan
Keyword(s):  
Mechanical Behaviour ◽  
Mechanical Performance ◽  
Basalt Fiber ◽  
Polymer Materials ◽  
Fiber Reinforced Polymer ◽  
Cementitious Composite ◽  
Fiber Reinforced ◽  
Engineered Cementitious Composite ◽  
Reinforced Polymer ◽  
Seawater Environment

Conventional concrete suffers from brittle failures under mechanical behaviour, and lack of ductility results in the loss of human life and property in earthquake zones. Therefore, the degree of ductility becomes significant in seismic regions. This paper investigates the influence of poly-vinyl alcohol fibers, basalt fiber-reinforced polymer (BFRP) and carbon fiber-reinforced polymer (CFRP) fabrics on the ductility and mechanical performance of low (LCFA) and high (HCFA) calcium fly ash-based engineered cementitious composite concrete. The study also focuses on the mechanical behaviour of the CFRP and BFRP materials using different matrix types exposed to 3.5% seawater environment. Cyclic loading and scanning electron microscopy observations were also performed to see the effect of chloride attack on mechanical performance and ductility of the specimens. In addition, utilization of CFRP and BFRP fabrics as a retrofit material is also evaluated. Results indicated that the degree of ductility and mechanical performance were found to be superior for the CFRP-engineered cementitious composite hybrid specimens under ambient environment, while LCFA-CFRP hybrid specimens showed better performance under seawater environment. The effect of matrix type was also found significant when engineered cementitious composite is used together with fiber-reinforced polymer materials. In addition, both fiber-reinforced polymer materials can be used as a retrofit material under seawater environment.

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